WALTER SK 22 KSP Screw Compressor power input 22 kW, air delivery 4 m³/min at 8 bar, direct drive, fixed speed, 7-year warranty

Code: SK-22-KSP
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Šroubový kompresor WALTER SK 22 KSP
€0,05 / pcs €0,04 excl. VAT Measure price:
up to 14 days
Delivery to:
02.11.2026
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The heavier of the pair of machines in a shared cabinet of 1,300 × 880 mm, designed for operation with constant air consumption. It has a G 1″ connection and fixed speed, so it does not require an inverter.

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Product detailed description

WALTER SK 22 KSP fixed-speed, direct-drive screw compressor

The SK 22 KSP is the larger of two models in the 1,300 × 880 × 1,170 mm housing. At 8 bar it delivers 4 m³/min, at 10 bar 3.6, and at 13 bar 2.88 m³/min.

Compared to the SK 18,5 KSP, this is 25% more air at 8 bar, and the machine is 40 kg heavier. The G 1″ connection and the 64 dB(A) noise level remain the same.

4m³/min air delivery at 8 bar
22kW motor input power
64dB(A) noise level
8–13bar operating pressure

Configuration of this machine

  • Screw element coupled directly to the motor · fixed speed without inverter · three-stage oil separation
  • Air delivery of 4 m³/min at 8 bar, 3.6 at 10 bar, and 2.88 at 13 bar
  • Housing shared with the SK 18,5 KSP, weight 418 kg
  • G 1″ connection, noise level 64 dB(A)
  • Power supply 400 V / 3 / 50 Hz, WALTER CONTROLLER control unit
Piping and oil distribution in the housing of the WALTER SK KSP compressor
Piping and oil lines in the housing
Electric motor with cooling fins in the WALTER SK KSP compressor
Electric motor with cooling fins

Who it suits

Suitable for operations with continuous demand, where air consumption barely changes during a shift. Under such a load, the inverter would have little to compensate for.

When to choose a different model

Two-stage compression

The two-stage SF 22 DSP delivers more air from the same power input: up to 4.2 m³/min at 8 bar, i.e. 5% more. However, it weighs 738 kg and comes in a larger housing of 1,500 × 1,037 × 1,273 mm.

Fluctuating consumption

The single-stage model with an inverter of the same power input is the SF 22 KSP. It has the same housing (1,300 × 880 × 1,170 mm) and weight (418 kg), with the air delivery at 8 bar varying continuously within the range of 1.44–4 m³/min.

What the parameters imply — calculated values

0.182m³/min of air delivery per 1 kW of power input at 8 bar
72 %of air delivery at 8 bar remains at a pressure of 13 bar

The values are calculated from the maximum air delivery at 8 bar and serve for comparing models with each other, not as a guaranteed value.

Frequently asked questions

Can the SK 22 KSP be operated at 13 bar?
Yes, the machine is manufactured for 8, 10, and 13 bar. At 13 bar it delivers 2.88 m³/min.
How noisy is the SK 22 KSP compared to the two-stage SF 22 DSP?
The SK 22 KSP has 64 dB(A). The two-stage SF 22 DSP has 63 dB(A), i.e. 1 dB(A) less. Both values are stated with a tolerance of ±3 dB, so the difference lies within the tolerance.

The machine is covered by a 7-year warranty on the entire machine. Warranty conditions, maintenance, and a comparison of all 17 models can be found in the category WALTER SK KSP screw compressors: direct drive without losses.

Ventilek’s advice

Before switching to a two-stage machine, it is worth calculating how many hours per year the compressor actually runs. With shorter operating times, two-stage compression will not make use of its advantage.

Additional parameters

Category: Air compressors
Warranty: 7 let
Compressor type: Screw compressor
Pressure: 8 bar, 10 bars, 13 bar
Air delivery: 4,000 l/min
Pressure vessel volume: It isn't
Connecting: 1"
Motor power: 22 kW
Mains voltage: 400/50 V/Hz
Lubrication: Oleic
Noise: 64 dB(A)
Weight: 418 kg
Engine: Electric
Drive: Direct
Air dryer: No
Retrieved from: Professional
Development: Stationary
Inverter: No

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